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1) This is a nonlinear function.
2) Some values in the table where s is the side length and A is the area could be:
s = 2, A = 4
s = 3, A = 9
s = 4, A = 16
s = 5, A = 25
3) The graph of the area of a square as a function of its side length is increasing. As the side length increases, the area also increases.
4) The domain of the function would include all positive real numbers, as the side length of a square can be any positive real number.